The Solus KH25 is Kumho's Grand Touring All-Season tire developed for the drivers of sporty coupes and touring sedans. Solus KH25 tires are designed to blend noise comfort, ride comfort and balanced all-season performance with dry, wet and wintertime traction. Solus KH25 tires mold a silica-enhanced all-season tread compound into a symmetric tread design that features full-depth circumferential grooves and variable-pitch lateral grooves to enhance hydroplaning resistance while reducing noise. The tyre's internal structure features twin steel belts reinforced by spirally wrapped nylon to promote stability and high-speed durability while polyester body plies provide casing strength and a smooth ride.
The load rating (represented by the numerical value) is related to the maximum weight that tyre can carry. So in this case 105 would refer to a load capacity of 925kg, with most passenger vehicle load indexes range from 62 to 126.
In all instances the tyres load index must meet or exceed the value displayed on the vehicles placard.
The speed category symbol, for example 'S', indicates the maximum speed at which the tyre can carry a load corresponding to its load index. So in this case, 'S' would refer to a maximum speed of 180km/hour.
See the chart below for a full list of speed symbols and their applicable values.